二棱啤酒大麦杂种一代及其亲本主要性状的灰色系统分析

研究采用灰色关联分析方法，对20组二棱型啤酒大麦杂种一代及其亲本的7个主要性状之间的关联系数、关联度和关联序进行了分析。结果表明：在关联度和关联序中，大麦的穗粒数、穗粒重，千粒重分别与穗长这一性状的关联度最大，关联序中穗长全排在首位；而穗粒数，穗粒重，千粒重分别与有效穗数这一性状的关联度最小，关联序中有效穗数全排在末位，为了提高单株产量应注意协调好有效穗数与穗长这一对主要矛盾明确各性状对籽粒产量所起的直接和间接作用及其相对重要性，确定主攻方向，配制各种优势组合。为大麦亲本选配提供科学依据。从而达到二棱型啤酒大麦预期的育种目标。

Gray system analysis of main characters in parents and hybrids of two-row hulled malting barley

By using the way of gray correlation degree,this study analyzed the gray correlation coefficient,correlation degree and correlation order among seven main characters in 20 groups of parents and hybrids of two-row hulled malting barley.The results showed that the correlation degree of ear length and the number of grains per ear or grain weight per ear or 1 000 grain weight was all the maximum in the correlation order,but that of effective ear numbers per plant and the number of grains per ear or grain weight per ear or 1 000 grain weight was all the minimum.For increasing yield per plant,relation of effective ear numbers and ear length should be coordinated;the direct and indirect effect or relative importance of various characters to grain yield should be made clear for providing scientific evidences to choose and compose parents of two-row hulled malting barley.